What absorbs at 3107 cm⁻¹ in an FTIR spectrum?

Brzi odgovor

A band near 3107 cm⁻¹ is usually interpreted by checking which functional groups repeatedly co-occur there in the literature, then confirming at least one or two additional peaks in the same sample. This page ranks those assignments by accumulated evidence rather than by a single fixed textbook rule.

Moguće dodjele funkcionalnih skupina

Rangiranje odražava akumulirane literaturne dokaze, a ne jedno autoritativno pravilo. Uvijek provjerite u kontekstu vašeg uzorka.

Mogući materijali

Materijali su prikazani samo kada ista literatura podržava ovu traku i barem jedan dodatni karakteristični vrh.

Logika spektra

This band becomes meaningful only when read with its neighboring peaks. In practice, analysts first look at the assignments above, then check whether the same sample also shows other peaks expected for the same structural motif. A lone band near 3107 cm⁻¹ is usually not enough for material identification by itself.

Upotreba u stvarnom svijetu

Ova vrsta upita uobičajena je u identifikaciji polimera, probiru nepoznate plastike, rješavanju problema u kontroli kvalitete, provjeri recikliranog materijala i pregledu dodjele vrhova potkrijepljenom literaturom.

Uobičajene pogreške

• Tretiranje jedne izolirane vrpce kao dokaza materijala bez provjere barem jednog ili dva podržavajuća pika.
• Zanemarivanje preklapanja: više funkcionalnih skupina može doprinositi u blizini istog valnog broja.
• Preskakanje validacije kada aditivi, mješavine, oksidacija ili kontaminacija mogu izobličiti spektar.

Savjet za provjeru

Kada nejasnoća ostane, validirajte hipotezu pomoću DSC, GC-MS ili TGA, posebno za mješavine, degradirane uzorke i punjene polimere.

Literatura iza ovih dodjela

• N-O bond pouzdanost 1,0

  “cm-1, 3085.4 For diamonds with no milky features, ~76% of them showed the peak at 3107 cm-1, while only ~8% showed a very weak peak at 3085.4 which is absent in the rest of the 23”

  Gu 和 Wang - 2018 - Optical defects in milky type IaB diamonds DOI: 10.1016/j.diamond.2018.09.010
• pouzdanost 1,0

  “4), values very rarely observed globally but Hydrogen impurities in diamond are indicated by an infrared 3107cm-1, absorption peak at characteristic for so-called Group B (high-Ca eclogitic) diamonds attributed to stretching vibrations of”

  The micro-/macro-diamond relationship: A case study from the Artemisia kimberlite (Northern Slave Craton, Canada) DOI: 10.1016/j.lithos.2012.05.031
• pouzdanost 1,0

  “cm-1 3.3 Hydrogen-related infrared absorption peak at 3107 cm-1 The hydrogen-related infrared absorption peak at 3107 has been assigned to the structure of three nitrogen atoms and a hydrogen atom surrounding a vacancy (VN 3H) [24].”

  Lai 等 - 2020 - Spectroscopic features of natural and HPHT-treated DOI: 10.1016/j.diamond.2019.107642
• Alkyl C-H pouzdanost 1,0

  “2808-2806 C-H in CH3 stretching 3107 3109-3123 C-H aromatic stretching The main changes observed in Figure 4, as a consequence of the reaction of AZA with”

  Photodegradation of Azathioprine in the Presence of Sodium Thiosulfate DOI: 10.3390/ijms23073975
• Alkyl C-H pouzdanost 1,0

  “The absorption peaks at gen impurity at 2850, 2920 and 3107 cm-1 sp3-CH 2are responsible for anti-symmetric vi2850 and 2920 sp3-CH 2symmetric vibrations in diamond, respectively brations and Fig.7.ThetypicalFTIRrecordedforthesynthesizeddiam”

  Yan 等 - 2016 - The effect of phosphorus and nitrogen co-doped on DOI: 10.1016/j.ijrmhm.2015.08.009
• C-S single bond pouzdanost 1,0

  “υ(HC=N) γ(HC=N) υ(C=N) C-S-C C-O υH2O cm-1 The two bands at 3107, 3103, 3085, and 3100 and at 2979, 2984, 2974, and Compounds υ(Ln-S) υ(Ln-N) Imine Imine Thiazole Thiazole Furane Lattice cm-1 2986 are due to the asymmetric and symmetric str”

  Synthesis, Characterization and Biological Activities of New Schiff Base Compound and Its Lanthanide Complexes DOI: 10.3390/ph15040454
• Alkyl C-H pouzdanost 1,0

  “and measuring in one place necessarily includes other cm-1 The peak at 3107 related to C-H vibrations is detected in most of the samples studied.”

  Mashkovtsev 等 - 2021 - Specific spectroscopic features of yellow cuboid d DOI: 10.3190/jgeosci.323
• Alkyl C-H pouzdanost 1,0

  “The height (or area) of the band at 3107 cm-1, 58 considered as the major absorption band and related to a C-H bond in the N 3VH defect 59 [23,24], is used to estimate if a diamond is "H rich" [25].”

  Combination of ERDA, FTIR spectroscopy and NanoSIMS for the characterization of hydrogen incorporation in natural diamonds DOI: 10.1016/j.diamond.2023.110007